Re: Wrong WN8

Published by A_Troll on

BLACKWOT › Forums › BlackWOT Modification for World of Tanks › General Questions, Suggestions › Wrong WN8 › Re: Wrong WN8

12.06.2020 at 21:57 #115965
A_Troll
Member
On 6/5/2020 at 11:13 AM, X-Man said:

yeah the point is it was very precise and now its sometimes about 2k WN8 wrong. just wanted to ask weather it belongs so the settings or something else. But it doesn’t matter XD

The WN8 formula depends on several variables: damage, frags, spot, def and win rate. Each tank has expected values for these variables, if you get higher result than what is expected, you get high WN8 rating.

For one single battle you either win or loose, so the win rate part of the formula does not fit for single battles. Therefore we use the formula called: WN8 WRx for this calculation. In this formula the win rate is fixed to the expected win rate for the tank used, so this part of the calculation always returns 145 as value. Here an example:

wn8_battle.png

For all other calculations we use the normal WN8 formula, where win rate also is taken into consideration. When calculating several battles the system summarizes all variables, both your result and the expected values, and  it ends up with a WN8 result.

It will not work out to calculate WN8 for each battle and make a flat average for those, because the values will not be weighted.

Let me explain by an example:

You play one battle with T1 (tier 1)

You make only 100 in damage

Expected damage is 224,1

You will get a low WN8 – Let’s say it is 500

 

You play one battle with IS-7 (tier 10)

You make 3800 in damage

Expected damage is 1772,5

You will get a high WN8 – Let’s say it is 3500

The flat average for those are: (500 + 3500) / 2 = 2000. However, this will not be correct.

 

The WN8 formula does like this:

Total damage result: 100 + 3800 = 3900

Total expected damage: 224,1 + 1772,5 = 1996,6

The average WN8 for those two battles will still be high because the IS-7 battle will be weighted more than the T1 battle as you can see. The result might be around 3000.

Another issue that affects WN8 is the win rate, if you won both these battles you will have 100% win rate for giving more value than calculations per battle where the win rate is fixed to the expected value.